The snapshot indicates that cases of U.S.-based attacks have increased in 2015, numbering 122 so far. In 2010, the number of these cases was 38. The snapshot also states that as of the end of July, ISIS has been the inspiration or been directly involved in 55 attacks against western targets, 14 of these in the U.S.

On July 17, a shooter opened fire at two military centers in Chattanooga, Tennessee, resulting in the deaths of four Marines and one sailor. The suspect was later killed by local police in a shootout. Investigations have revealed that the shooter had possessed sermons of Anwar al Awlaki, former external operations leader for the Yemen affiliate of al Qaeda.

"We can’t stop what we can’t see, and with terror going viral—spreading online and across borders—I am worried more fanatics will go undetected until it’s too late," McCaul said. "We’ve got to do more to take the fight to the enemy overseas at its source, otherwise we’re going to see the threat picture here at home steadily worsen.”

The report states that approximately 48 U.S. residents have been arrested in a case relating to ISIS. Most recently, Arafat Nagi was arrested after attempting to travel in hopes to join the terrorist organization and had been involved in recruitment activity in Lackawanna, New York.